Appliance for storage vessels for liquid gases.



P! TENTED SEPT. 4, 1906.

L. VON ORTH. APPLIANGE FOR STORAGE VESSELS FORLIQUID GASES.

APPLIUATION FILED APR.1.1904.

2 SHEETS-SHEET l.

NO- 830,248. PATEN'IED SEPT. 4, 1906.

. L. VON ORIH. APPLIANGE FOR STORAGE VESSELS EUR LIQUID GASES.

APPLICATION' FILED APR. 1. 1904:.V

2 SHEETS-SHEET 2.

Wz'zzesses: a( ./Je vejefaf:

UNITED STATES PATENT OFFICE'.

LUDWIG VON ORTH, OF BERLIN, GERMANY, ASSIGNOR TO DEUTSCHE SCHIFFSFEUERLSCHGIBELLSCHAEI MIT BESCHRNKTER HAF- TUNG. OF BREMEN, GERMANY.

Specification of Letters Patent.

Patented sept. 4, 1906.

Application filed April 1, 1904- Serial lo. 201.135.-` i

To all whom it may concern:

Be it .known that I, LUDWIG voN Olmi, engineer, a citizen of the Kingdomof-Wrtemberg, German residing at No. 9 Ludwigskirclistrasse, Ber in, inthe Empire of Germany, have invented certain new and useful Improvementsin Appliances for Storage Vessels for Liquid Gases; and I do herebdeelare the follow' to be a fullclear, an exact description o theinvention, such as will enable others skilled in the art ,to which it apertains to make and use the same.

en withdrawing li uid gases, such' as liquid. carbon dioxid an the like,from/the storage vessels or bottles, the reducing-valve becomes readilyfrozen, as is well known, and

the discharge-openings become clogged with'- snow. In order to obviatethis disadvantage, various simple means 'have been employed, which wereall based upon the idea of warming the liquid gas from the outside.

The simplest means employed consists in that canb heated, through. whichthecarbon-dioxid conduit is made to pass. 'For the requirements of amoderate discharge of the liquid gas as heretofore effected these meansare sufficient. They are, however7 quite insufficient when lar equantities of the liquid gas are to be disclgiarged very rapidly fromthe storage vessels-such, for instance, as in the case of extinguishingfires on board ship or the like by means of carbon dioxid. .Wit

such a large consumption of carbon dioxid a heatable water-chamber, suchas Ibefore mentioned, would not be of the least use. It would re uire tobe of the size of a large steam-bo' er and would then ossibly not beeffective. In addition, `suc a heatable chamber between thecarbon-dioxid vessel 'and the reducing-valve could not bepracticallyapplied in cases such as above mentioned, as the heating up of the waterwould require several hours, as in the case of an ordinary steam-boiler,during which time the conlagration would require to have been completelyextinguished. On the other ducing-valve would be a source of very greatdanger, as in the event of the consumption of carbon dioxid being stoped from any cause a prejudicial increase o the heating action upon thecarbon dioxid contained in the receptacle would take place and easilyresult in an explosion.

The present invention has for its object to prevent the freezing of theliquid gas vin such cases where a rapid consumptiqnbf large quantities'of carbon dioxid or the like takes place, While at the saine time thearrar ige ment is capable of being'put rapidly into effective o erationand 1s capable of autoimatic regu ation.- This'is attained by the use ofa source of heat, as before; but the been proposed consists in that thegas is not .heated in its liquid condition, as heretofore, "but onlyafter its issue in the vaplorized condition. The heating medium is t enbrought in contact with the gas in a ine state of subter thereon withoutany danger of the heat being carried back to the sto e vessel, as onlythe gaseous articles are eated that have already issued therefrom. Anarrangement for c out this method of heating is shown diagrammaticallyon the accompanying drawings, inwhich- Figure 1 shows a verticallongitudinal section. Fi v2 shows a cross-section, and Fig. 3 shows t eapparatus attached to a' storagechamber.

^ The liquid as issues througha pipe or nozzle a, from tie storagevessel 1. This pipe opens into a second ipe orchamber b, passing througha vesse or casing c. Into the vessel a liquid-heating medium isintroduced at d, whence it iiows over the ribs e, projecting from thepipe b in such manner as to flow in a serpentine direction roundthe pipeb and to issue at f. The pipe or nozzle a is closed at its end and hasan oblique or spirallyformed passage gl In consequence hereofl theissuing liquid as is directed or. discharged at an an le ireetly againstthe imwi' Wall of the pipe against which it inipiiigvs under pressure,so as to be dispersed and couverted into va or inconsequence of theclilarged space a orded by the pipe or cliambti division and canAconsequently act much bet-` main diiierence between this and what hasIOO ' b as compared with the opening of the pas- I sage g. The gas thusformed then flows in a helical path downward through the pipe or chamberb under continual expansion. The gaseous current therefore comes incontact Vith the entire inner surface. of the pipe, so that the gaseousparticles are continually heated by contact with the pipe. 'lhus areliable and considerable heating action is obtained, while any backwardaction upon the storage vessel is prevented by the pipe a. The ribs ofpipe b, inelosed in the casing c, not only serve for guiding the currentof thel heating medium, but they also serve to transmit directly bytheir conducting power the heat of the liquid medium to the pipe or-chamber b, which in addition is also heated externally by contact withthe medium.

As heating medium water of ordinary temperature is advantageouslyemployed, so that no special source of heat is necessary. The reason whywater can be used as an energetic heating medium, although, as is known,it is colder than the liquid carbon dioxid7 is that such heating mediumis not required to warm up the liquid: carbon dioXid as heretofore,but'is made to surround the finely-divided vaporizing gases. Theproduction of cold only occurs at the moment of vaporization, and thefreezing is produced by the backward conduction of the cold. The factthat in thev arrangement shown by way of example the pipe or nozzle a,reaches to a certain extent into the casing or vessel c has no effectupon the action. It is only done out of practical considerations inorder that the pipe or nozzleamay t closely and tightly into the heatingdevice. No heating of the liquid carbon doxid in the pipe or nozzle awill take place, because the carbon dioxid lows too rapidly through thepipe or nozzle a (in about one-hundredth of a second) and because, asalready stated, the heating medium Having thus described the nature ofmy said invention and the best means I know of carrying the saine intopractical effect, I claiml \1. In a means for preventing the freezingand formation of snow on the discharge of large lquantities of liquidgas, such as carbon dioxid, from storage vessels, the combination with avessel containing a' suitable heating medium for the vaporized gas, of achamber thc-rein, and a nozzle for the liquid gas discharging directlyagainst the wall of the chamber.

2. In a means for preventing the freezing and formation of snow on thedischarge :of large quantities of liquid as, such as carbon dioxid, fromstorage vesses, the combinatie of a discharge-pipe, such as a, having anoblique passage. g, a pipe, such as b, of larger diameter communicatingwith the discharg pipe and serving as a heating-surface upon which thegas impinges and over which it is made to low in a helical ath Whilebeing expanded and vaporized, ri s, such as e, formedon the pipe I), anda casing, such as c, surrounding the pipe b and the ribs, and throughwhich a' liquid heating medium is made to flow so as to pass in aserpentine direction round thepipes a and l); the ribs e serving at thesame time to conduct the heat of the medium directly to the said pipes,substantially as described.

3. The combination of a discharge-pipe a for li uid gas, having anoblique passage g, a pipe 1 into which pipe a fits, having ribs e, and aclosed casing c surrounding pipe b and through which a heating fluid ismade to low,

substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses. I LUDWIG VON ORTH.

Witnesses:

HENRY HASPER, WoLnEMAn HAUPT.

